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Dose Optimization and Reduction in Musculoskeletal CT Including the Spine

  • Chapter
Radiation Dose from Multidetector CT

Part of the book series: Medical Radiology ((Med Radiol Diagn Imaging))

Abstract

Due to improvements in temporal and spatial resolution, and despite its radiating character, CT is still indicated for the assessment of many musculoskeletal disorders. New exploration techniques, such as dynamic CT of the joints and bone perfusion imaging, are now available in musculoskeletal imaging. However, they require the repetition of many phases and lead to an increase in dose. For these new applications and for spine and proximal joint imaging in the vicinity of radiosensitive organs, optimization and dose reduction are critical. In this chapter, we report the typical doses delivered in musculoskeletal CT examinations and discuss several options for allowing dose optimization and reduction, depending on behavioral and technical factors. Among them, tube current and tube potential optimization are still critical and must be adapted to the type of exploration and the body habitus of each patient. Recent technical factors can also help to reduce the doses such as automatic tube current modulation, active collimation or new CT iterative reconstructions. Although these technical factors allow for an important reduction of the doses, behavioral factors such as respecting the indications and limitations of the scan coverage remain essential. Finally, we will also indicate how to optimize and reduce the doses in particular applications of musculoskeletal imaging, such as dynamic CT, bone and soft tissue perfusion CT and dual-energy CT.

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Authors and Affiliations

  1. Guilloz Imaging Department, Hôpital Central, CHU Nancy, 29 avenue du Maréchal de Lattre de Tassigny, 54035, Nancy Cedex, France

    A. Gervaise, P. Teixeira, S. Lecocq, M. Louis & A. Blum

  2. Medical Imaging Department, Hôpital d’Instruction des Armées Legouest, 27 avenue de Plantières, BP 90001, 57077, Metz Cedex 3, France

    A. Gervaise

  3. Medical Radiophysics Unit, CRAN UMR 7039 CNRS, Centre Alexis Vautrin, Avenue de Bourgogne, 54511, Vandoeuvre-les-Nancy, France

    N. Villani

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  1. A. Gervaise
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  2. P. Teixeira
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  3. N. Villani
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  4. S. Lecocq
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  5. M. Louis
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  6. A. Blum
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Correspondence to A. Gervaise .

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  1. , Department of Radiology, Reseau Hospitaller de Medecine Sociale, Baudour, Belgium

    Denis Tack

  2. Massachusetts General Hospital, Department of Radiology, Harvard Medical School, Fruit St. 55, Boston, 02114, Massachusetts, USA

    Mannudeep K. Kalra

  3. Hôspital Erasme, Department of Radiology, Université libre de Bruxelles, Route de Lennik 808, Brussels, 1070, Belgium

    Pierre Alain Gevenois

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Gervaise, A., Teixeira, P., Villani, N., Lecocq, S., Louis, M., Blum, A. (2012). Dose Optimization and Reduction in Musculoskeletal CT Including the Spine. In: Tack, D., Kalra, M., Gevenois, P. (eds) Radiation Dose from Multidetector CT. Medical Radiology(). Springer, Berlin, Heidelberg. https://doi.org/10.1007/174_2011_500

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